High rake knives for color paper slitting
US5974922A · kind A · utility
11Cited by
10References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1998 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Apr 22, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/7851
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method of slitting photographic print material comprising providing at least one rotary anvil shearing device and at least one rotary knife shearing device wherein said at least one rotary knife has a rake angle of between about 50 and 70 degrees, and passing photographic material between said anvil and said knife to cut said material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.